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深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一致：
void printStringByChar(std::string &str) {
char *p = const_cast<char *> (str.c_str());
char q[1024];
while (*p != '\0') {
sprintf(q, "%02x, %u, %c", *p, *p, *p);
std::cout << q << std::endl;
p++;
}
}
（十六进制，无符号整形，字符型）
Shift-jis:
0xff...
C# equivalent of the IsNull() function in SQL Server
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you can cast dbnull to an object ((object)oldValue ?? (object)DBNull.Value))
– Jeremy Gray
Mar 2 '11 at 19:17
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Convert hex string to int
...95). So you need Long to store it. After conversion to negative number and casting back to Integer, it will fit. There is no 8 character hex string, that wouldn't fit integer in the end.
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imp...
How can I convert my device token (NSData) into an NSString?
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On XCode 5 I had to cast the deviceToken to make it compile: const unsigned *tokenBytes = (const unsigned *)[deviceToken bytes];
– Ponytech
Oct 6 '13 at 21:15
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Simple way to convert datarow array to datatable
...he number of columns in this table.". With-Clone Version Error: "Unable to cast object of type 'System.Data.DataRow' to type 'System.IConvertible'.Couldn't store <System.Data.DataRow> in StoreOrder Column. Expected type is Int64." Note: StoreOrder is the first column in the table schema. Seem...
Get a random boolean in python?
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You likely don't even need to cast to a boolean at all, since 0/1 have the proper truth values.
– Adam Vandenberg
Jul 26 '11 at 16:46
7...
Replace only some groups with Regex
...iousCaptureEnd = 0;
foreach (var capture in group.Captures.Cast<Capture>())
{
var currentCaptureEnd =
capture.Index + capture.Length - m.Index;
var currentCaptureLength =
cap...
get list of pandas dataframe columns based on data type
... mean it's not working, that actually means your DataFrame columns weren't cast to the type you think they should be, which can happen for a variety of reasons.
– Marc
Sep 5 '17 at 13:56
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What is __stdcall?
... __stdcall Scene::ExecuteCommand(void* command)
{
return system(static_cast<char*>(command));
}
Format bytes to kilobytes, megabytes, gigabytes
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i had to cast the $size to a double to get it to work. heres what worked for me: function formatBytes($size, $precision = 2){ $base = log(floatval($size)) / log(1024); $suffixes = array('', 'k', 'M', 'G', 'T'); return round...